How to Increase Your Fiber Intake 101

Fiber 101: How to Increase Your Fiber Intake Without Overdoing It

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Fiber is definitely having its moment in the pop culture spotlight. (Please don’t ask me to use the word “fibermaxxing” in a sentence.) As a dietitian, I’m thrilled to finally see people giving fiber the attention it deserves. Although it doesn’t provide energy, fiber still plays an essential role in many body processes.

“Fiber is important for a balanced gut microbiome, regular bowel movements, digestive health, blood sugar management, healthy cholesterol levels, appetite regulation, liver health, weight management, and more,” says Avery Zenker, RD, an Ontario-based health writer at MyChronsAndColitisTeam.

With so much riding on this nutrient, we want to help you understand how much is needed, what important foods and supplements you can get it from, as well as how to safely boost your intake — and yes, there's definitely a wrong way to go about it.

Recommendations for what constitutes “enough” range with age and intake. But food blogger Meme Inge, RDN, of Living Well Kitchen in Solana Beach, California, says: “Recommendations are for about 14 grams [g] of fiber per 1,000 calories consumed. For men under 51 years old, [that’s] 38 g per day. Women under 51 need at least 25 g per day. Men over 51 need 30 g, and women over 51 need at least 21 g of fiber per day.”

If you’re not coming close to this number right now, your best bet is to increase your intake slowly and get to a place you can stay at consistently, according to Inge, to avoid gastrointestinal distress. Zenker suggests setting meal targets by breaking down your full daily fiber needs into manageable portions. For a 25-g day, you could aim for 8 g to 9 g with each meal and then work in some of our high-fiber snack ideas, too.

I’ve come across a lot of misconceptions about what foods are actually high in fiber during my own 12 years as a dietitian. (The PR team for spinach deserves a raise.) For instance, folks are often shocked when I tell them that you’d have to eat 10 cups of spinach to get close to the amount of fiber in a single serving of beans.

Zenker suggests swapping out your garden salad for roasted vegetables — like cauliflower, broccoli, and Brussels sprouts — and trying some of the highest-fiber foods, like artichokes. While some good fiber will come from fruits and vegetables, some more-concentrated sources tend to be nuts, seeds, beans, and grains. “Legumes are some of the highest-fiber foods, providing you some of the best bang-for-your-buck,” Zenker says.

As a bean and grain evangelist myself, I’m pleased to share some of the best foods (and some fabulous supplements) to help you get more fiber each day.

When to Consult a Doctor

While some instances of digestive distress — like bloating, gas, and even occasional diarrhea or constipation — can be normal, it’s best to get a healthcare check-up if these symptoms are long-lasting, persistent, or causing lots of discomfort or pain. It’s also important to review any major dietary changes or new supplements with your healthcare team, as certain foods and supplements can interact with (affect) certain medications.

High-Fiber Pantry Staples

Pantry staples for increasing fiber intake
Everyday Health

If you’re trying to increase your fiber across your meals through cooking at home, it’s a great idea to fill your pantry with high-fiber foods, so you’ll always have what you need within reach. Our favorite high-fiber pantry heroes are usually beans, grains, nuts, and seeds. That’s because they’re often shelf-stable, cost-effective, versatile, and they pack precisely the fiber-filled punch we’re after.

“Eat more beans,” Zenker urges. “Beans and legumes like lentils, black beans, chickpeas, kidney beans, and edamame are some of the highest-fiber foods.” You can lean into canned or dried versions, just the basics, or fortified and prepared options. Zenker also says that “some cereals are especially high in fiber, like bran cereals, which can contain nearly 30 g of fiber per cup. Granola, muesli, whole-grain porridge, and chia-pudding mix cereals can be high in fiber, too. (Just watch the sugar content.) Whole-grain, seedy breads and crackers can also pack in a lot of fiber.” No matter what you choose to try, you can fill your pantry with a world of options.

Bob's Red Mill oat bran hot cereal

Best for Oatmeal Lovers Looking for Variety

Bob’s Red Mill Oat Bran

You know oatmeal. But have you been introduced to its higher-fiber sibling, oat bran? I always love the options from Bob’s Red Mill.

When oat grains are processed to remove the inedible outer hull, the inner “oat groat” is left and then turned into oatmeal. The outer layer of the groat is the bran, which can be separated. That bran is retained in steel-cut oats and groats, but in other forms of oats, it’s removed and set aside as its own product.

Oat bran is mostly eaten as a breakfast grain and has a creamy, smooth texture. It’s great on its own or mixed with other grains for a classic hot cereal or an overnight oat. Plus, it blends extremely well into smoothies and can even be added to baked goods. Oat bran is specifically known for its presence of a soluble fiber called beta-glucan, which has been linked with lower cholesterol and better-controlled blood sugar.

BetterBody foods organic chia seeds

Best for Those Who Get Down With a Funky Texture

BetterBody Foods Chia Seeds

Chia seeds have come a long way in our cultural consciousness from the days of chia pets. And while yes, you can still make yourself a mini topiary with them, these delightful little seeds are now known for the fiber and nutrients they provide.

Chia seeds have a massive 10 g of fiber in 2 ½ tablespoons (tbsp), 7 g of polyunsaturated fats (those omega-3 and omega-6 fats that are important for heart health), plus 5 g of protein.

If you’ve never worked with them before, they’re usually put into a liquid, which they absorb. This forms a gel-like texture. Now, if you’re not a fan of capitalizing on this to make your own chia puddings, they can also be added to other foods. These include oats (hot and cold), smoothies, baked goods, granola. That also can be used as a topping or even to make chia jam.

Bob's Red Mill bulgur whole grain

Best for the Whole-Grain Girlies

Bob’s Red Mill Bulgur Wheat

One of the types of pantry foods I find is often under-explored among the clients I work with is whole grains. Sure, people might have some experience with, for example, whole-grain oats. But rarely do they go beyond basics unless these foods already hold a culturally important role.

One of my favorite “starter grains” for people looking to expand their experience with grains is bulgur wheat. Not only is the fiber count impressive at 5 g per one-fourth cup, but the texture is fabulous, the flavor is nutty and rich, and it cooks in less than 15 minutes.

Bulgur is common in dishes like tabbouleh, a salad of parsley, mint, lemon juice, onion, olive oil, cucumber, and tomato. It also works extremely well in a pilaf form, as the base of salads, grain bowls, as a substitute for breadcrumbs in meatballs or other formed meat patties, and for many other sweet and savory applications.

Rancho Gordo heirloom midnight black beans

Best for the No-Canned-Beans-Allowed Crowd

Rancho Gordo Heirloom Beans

Beans and legumes are superstars for both fiber and protein content. The humble black bean comes in at about 7 g of fiber per half a cup cooked, and lentils have a smidge more.

While there are absolutely more cost-effective and convenient canned-bean options than the dried beans from Rancho Gordo, in my humble opinion, they’re not really in the same league when it comes to flavor and texture. It might seem odd to describe the experience of eating a dried bean that’s been cooked as “fresh,” but that’s what the Rancho Gordo heirloom beans are like. They can be toothsome without being mealy, and creamy without grittiness.

I’ve also never come across such a variety of bean types. And while there are some recognizable stand-by options like the pinto bean, you can also get into some less-common varieties like the Puglia lentil or the Royal Corona Bean. I wouldn’t say this brand will make sense for “bean-ginners.” (I’m so sorry about that.) But it does hold a certain appeal if you’re a bean lover already, and you want to expand your palate while keeping fiber in play.

Barilla Protein plus rotini pasta

Best for the Al Dente Aficionados

Barilla Protein+ Pasta

The name Barilla Protein+ might say protein, but the label definitely screams fiber, with a solid 5 g per 2-ounce (oz) serving.

The key to both the protein and the fiber is in the blend of flours. This pasta is made with a blend of semolina and durum wheat flours, plus lentil, pea, and chickpea flours. This combination ups the ante on fiber. But unlike other bean-based pastas, Barilla Protein+ maintains a really fabulous texture that is almost indistinguishable from regular, wheat-based pastas.

If you need any reassurances, I regularly feed it to my Italian-American family members and receive only praise. I love how easy this pasta makes it to find fiber in a simple and affordable meal, and I often use it to meal prep pasta salad for lunches during busy weeks. 

Fiber-Filled Snacks

Fiber filled snacks
Everyday Health
Snacks might be smaller in stature than meals, but they’re no less important as an opportunity to get some fiber in. While you can certainly snack on fresh foods like fruits and veggies, which can provide some useful fiber, they’re not always as easy to carry with you on the go. Nuts and seeds offer a more shelf-stable opportunity for smart snacking, and we definitely recommend them for a fiber boost. But some real, possibly surprising fiber heroes are available in the snack world that we think you should know about. Whether you’re reaching for savory or sweet, just a bit of fiber, or looking to pack a punch, these are some of the best snack products for getting to those fiber goals. 
Olipop Strawberry Vanilla

Best for the Silly Little Drink Lovers

Olipop

The world of functional beverages has expanded so much in recent years that it’s hard to keep track of which drink is offering which benefits. But when it comes to fiber, one drink is top of mind: Olipop.

With a whopping 9 g of fiber in a 12-oz can and a ton of fun flavors, you can easily get a significant percentage of your daily fiber needs met with just one drink. The fiber comes from a blend of sources, including cassava root fiber, acacia fiber, and guar fiber, which all dissolve completely. So there’s no gritty texture here, though there can be some aftertaste from the stevia used as a sweetener.

Olipop has a bevy of flavors, ranging from recognizable basics like cream soda, classic root beer, ginger ale, and vintage cola, to fruity and fun options like orange squeeze, Shirley Temple, raspberry sherbet, and many more.

Lesserevil popcorn Himalayan salt

Best for Lovers of Crispy, Crunchy Snacks

Lesser Evil Popcorn

So technically, this snack isn’t considered “high fiber.” Rather, it’s “a good source of fiber,” since it has 4 g per serving instead of 5 g. That said, we think popcorn absolutely needs to be included in any discussion of fiber-filled snacking, as it’s one of the most portable and cost-effective snacks for anyone looking to get more fiber.

The Lesser Evil brand has some of our favorite bagged options. The Himalayan sea salt flavor is a classic, and we love the buttery finish of the Himalayan gold, not to mention options like white cheddar and garlic Parmesan.

One way I recommend it to clients is by working it into a DIY snack mix: Pick a popcorn, a nut or seed, a dried fruit, and a fun chocolate candy for a fiber-filled snack you can make sweet or savory, with almost infinite variations. My personal favorite is salted popcorn, dried cherries, pistachios, and dark chocolate chips. If I’m feeling like having a savory option, I like using the white cheddar flavor with BBQ-roasted almonds and beef jerky bits for a bit of protein and fiber.

Rip Van Wafel caramel filled stroopwafels

Best for Sweet Treat Snackers

Rip Van Wafels

Sometimes a sweet treat is absolutely required. And while we don’t think every single thing you eat needs to be fiber-focused, if you can enjoy them both at the same time, why not? If you’ve never enjoyed traditional stroopwafels, they’re essentially two thin, crispy, and chewy cookie layers with an even thinner layer of caramel between them.

Rip Van Wafels makes some of the best stroopwafels. They make a delightful little snack or treat, especially with coffee or tea. Each full-size cookie has a surprising 6 g of fiber. They’re individually packaged, ideal for taking with you on the go. And they come in flavors like Dutch caramel and vanilla, cookies and cream, chocolate, and snickerdoodle.

The Only Bean crunchy roasted edamame bean

Best for Those Accustomed to High-Fiber Diets

The Only Bean Crunchy Roasted Edamame

Beans might not seem like the most appealing snack. But once you’ve tried a crunchy, crispy, salted, roasted edamame bean, you might change your tune, especially when you find out how much fiber they have. One oz of these beautifully savory bean snacks has an incredible 6 g of fiber, not to mention 14 g of protein.

The Only Bean makes several flavors of roasted edamame aside from the sea salt flavor. These include ranch, wasabi soy sauce, sriracha, and buffalo, all of which we’d love to find on hand just when we need a savory little snack. While we love steamed edamame, this snackable version is impossible to resist. And it comes in conveniently packable 1-oz packs that are ideal for tossing in a backpack, purse, or lunch box. It’s also available in 4-oz bags. 

High-Fiber Grocery and Meal Delivery Services

Grocery and meal delivery services for fiber focus
Everyday Health

Grocery and meal delivery services offer something uniquely helpful: a break from the daily hustle of food planning, cooking, shopping, and preparing meals, and the mental fatigue that comes with it. Factor in trying to eat more fiber, and it can really feel difficult to know what food choices to make on top of everything else.

Grocery delivery services can take several forms depending on your priorities. Some focus on rescuing food that would otherwise be sent to a landfill. Others offers single-category deliveries like meat or produce. And some focus on providing shelf-stable products. (Plus, a few services do it all).

Meal delivery services are split into two factions: prepared meals and meal kits that you prepare yourself. Prepared meals will come fresh or frozen, usually single-serving, and meal kits normally serve two people or more. Both will provide you with a menu of options to choose from, some rotating and some staying static. But the food can vary tremendously from service to service.

Every company seems to be marketed with a different health angle. So how can you know who truly backs that claim up, and who’s got the fiber to prove it? We’ve tested an assortment of meal and grocery delivery services that really give us the ease we’re looking for and make it easy to find the fiber.

sunbasket logo

Best for the Health-Conscious Foodies

Sunbasket

Sunbasket has a lot of elements that we love about meal delivery services, all under one roof. You can choose from fresh or frozen prepared meals, plus meal kits that you cook at home. You can go for more health-conscious options or lean into something fun and comforting. And there’s no shortage of delicious-sounding options whichever route you go.

Where we really think Sunbasket shines is the amount of fiber-rich options on the menu. The service often incorporates abundant produce alongside whole grains and beans as the base of its dishes. When I tested Sunbasket myself, I found the ingredients to be high-quality. Plus, the menus are diverse and easy to filter for healthier, high-fiber options.

Thrive Market logo

Best for Stocking the Pantry

Thrive Market

Thrive Market wants to make it easy for you to fill your home with affordable, healthy groceries from recognizable brands, without the hassle of going to the store. It offers shelf-stable products and personal care items, and writer Brittany Vargas says the website is “inviting and easy to navigate.” Still, we wish it were easier to see what you can buy without a membership.

Since we’ve had the experience of testing the service, we can say that the list of products is truly expansive and easily searchable. It offers filters that you can simply plug in for items, like dairy-free, gluten-free, vegan, high-protein, and, of course, high-fiber, just to name a few.

When she tested the service, Vargas enjoyed the “great selection of specialty items, including personal care and home items.” And while she didn’t really feel that affordability was the most prominent feature, it was nice that the shipping fees were waived if you hit a minimum order. Plus, Thrive does accept SNAP (supplemental nutrition assistance program) EBT benefits.

Thistle meal delivery logo

Best for Fresh-Only Food

Thistle

For those who like the ease of prepared meal delivery but want a plant-forward approach to fiber, Thistle might strike a chord. The company serves up individual servings of fresh, packaged meals that are either entirely plant-based or plant-forward, along with meat-based protein options.

Meals are made without dairy or gluten-containing ingredients for those who wish to or need to avoid that. They generally provide a minimum of 10 g to 15 g of fiber per entrée, and 10 g of fiber per breakfast.

Vargas thought Thistle made it “easy to get a wide variety of healthy whole foods that also taste delicious.” Menus are based on location, so there's some variation depending on where you live. But you can expect plenty of fiber-filled foods like whole grains, nuts and seeds, fruits, and veggies. These take the form of delectable meals like a cherry cheesecake mousse dessert or a gochujang cauliflower bowl for lunch, paired with a snack plate of cashew-based pub cheese, seed crackers, tomatoes, and almonds.

Daily Harvest logo

Best for Filling Out a Freezer: Daily Harvest

Daily Harvest

Smoothies and oat bowls are some of the simplest, most effective ways for increasing your fiber intake. Daily Harvest makes it even easier to have them at home without spending hundreds to stock your freezer with niche ingredients.

Oat bowls include flavors like blueberry maple pecan and hazelnut cacao, and smoothies range from ginger + greens to cherry + raspberry and mint + cacao. Fiber does vary from item to item, but it ranges from 5 g to 15 g. Writer Caitlin Beale, RDN, calls the service “ideal for anyone who wants to incorporate more produce into their diet but struggles to find the time.”

Fiber Supplements

Fiber supplements
Everyday Health

Supplements work best when they complement your diet. “Prioritize fiber from a variety of whole foods, rather than supplements,” Zenker says. “Supplements can be helpful, but shouldn't be the main fiber source.” That said, some fiber supplements have been shown to be beneficial and are well-tolerated. These supplements can be useful for maintaining consistent daily fiber intake. My own clients find them especially helpful for travel or on days when fiber intake is a bit lower overall, especially if they can’t tolerate many high-fiber foods.

According to Zenker, “psyllium husk is one of the most widely used fiber supplements, known for its ability to help promote normal bowel movements.” It’s also been linked to desirable improvements in LDL cholesterol and blood fats called triglycerides.

 Outside of psyllium, other supplement options for fiber are available as well, with products like guar fiber and blends of soluble and insoluble fiber types to suit different needs. While we always recommend reviewing any new supplements with your healthcare team before starting them, these are a few to consider if you feel your diet is in a good place, but you could still use some additional fiber.
Momentous fiber powder

Best for Combined Fiber Sources

Momentous Fiber+

Momentous Fiber+ is actually a blend of several sources of fiber and fiber-like substances, including psyllium (a soluble fiber), resistant starch, and insoluble fiber from rice bran.

While the benefits of soluble and insoluble fiber are better-known, resistant starch is a bit of a new kid on the block. When certain starchy foods are cooked and cooled, some of their starch becomes resistant starch (as in foods like oats and potatoes). This starch then resists digestion and can act like fiber, helping us form healthy stools and feed the bacteria in our guts.

All in all, the blend in this fiber supplement could be useful if you’re simply not getting enough fiber overall from all sources, and if you need supplementation in multiple areas, not just soluble fiber.

Tomorrow's Nutrition Sunfiber

Best for Low FODMAP Eaters

Tomorrow’s Nutrition SunFiber

Some people may not be able to tolerate psyllium. For example, folks with irritable bowel syndrome (IBS) or small intestinal bacterial overgrowth (SIBO) may need a readily available source, and guar fiber can be a good choice. We especially love this option from Tomorrow’s Nutrition.

Partially hydrolyzed guar gum, also called PHGG, is a common supplement in these cases. It can be really helpful for improving fiber intake for those on the specialized and highly restrictive diets that often accompany these conditions. Positive impacts on stool texture, bowel movement regularity, and cholesterol lowering have also been seen with PHGG.

Metamucil 4 in 1 fiber orange

Best for Soluble Fiber Seekers

Metamucil Psyllium Husk Fiber

Psyllium husk is a well-studied form of soluble fiber supplementation with strong links to positive health outcomes, such as better blood sugar management, reduced cholesterol, and support for conditions like chronic constipation, to name a few.

It’s also generally well-tolerated (with certain exceptions), and Metamucil has a lot of accessible, flavored options to choose from. While some of the brand’s flavored options can be high on the sugar side, sugar-free options are available and make a great starting point for psyllium supplementation.

Psyllium does form a gel when combined with water, so it’s best to drink it somewhat quickly once you mix your supplement. And, as with any fiber supplement, you’ll want to keep up your overall hydration.

How Much Fiber Do You Actually Need?

It’s recommended that you take in 14 g of fiber per 1,000 calories, but this varies by age as well. It’s recommended that women under age 50 consume 25 g per day, while women over 50 should consume 21 g. For men under age 50, the goal is 38 g per day, while men over 50 should have 30 g. For children ages 12 to 23 months, guidelines suggest a daily intake of 19 g of fiber.

What’s the Difference Between Soluble and Insoluble Fiber?

Fiber breaks down into two categories: soluble and insoluble. Soluble dissolves in water while insoluble doesn’t, which is a distinguishing factor for how they both function.

“Both [types of fiber] are helpful for different reasons,” Inge says. “Soluble fiber binds with water and slows digestion. It also helps reduce blood sugar spikes and can reduce blood cholesterol.” Soluble fiber is found in oats, beans, barley, peas, certain fruits like citrus and pears, and vegetables like cauliflower and potatoes. This isn’t a comprehensive list, but it may be helpful to know that psyllium husk is also a source of soluble fiber.

 “Some types of soluble fiber are considered prebiotic fiber. Prebiotic fiber acts as food for the microbes in the gut microbiome. Gut bacteria consume prebiotic fiber and release beneficial anti-inflammatory compounds called short-chain fatty acids (SCFAs),” Zenker says.

Insoluble fiber, however, retains its shape in water and is often described as the “roughage” in the diet. That makes it important for bulking stools and helping move material through your intestines. According to Zenker, it can also help prevent constipation and support comfortable digestion.

While the goal is to have a mix of both types of fiber in your diet, some foods do lean more heavily in one direction than the other, so it can be helpful to know which foods are which. Most fiber-containing foods will have both. But if you find yourself having more of one than the other, you can always supplement as well.

Can Taking In Fiber Cause Gas and Bloating?

Taking in fiber can lead to a range of intestinal responses, and some symptoms can include gas and bloating, especially if you’re increasing your intake by too much too fast, says Inge. Zenker confirms this: “An abrupt and large increase in fiber can cause digestive discomfort like gas, bloating, diarrhea, or constipation. Too much of certain types of fiber or low water intake can also cause these digestive symptoms. When the gut isn’t used to these fiber patterns, it’s more likely to react.” 

FAQs

Can taking fiber supplements cause constipation and diarrhea?
Taking fiber supplements, especially without enough water, can definitely cause constipation. This can also happen with large changes in fiber intake. “You don’t want to eat 10 g of fiber one day then 45 g of fiber the next, as the large fluctuations can lead to digestive discomfort,” Inge says.
“There can be too much fiber in general, too much fiber per meal, or too much of a certain type,” Zenker says. “Too much fiber can exist in the context of inadequate water intake. One can be consuming the daily recommended fiber, but not enough water, and experience signs of excess fiber intake.” Zenker says that you’ll likely know if you’re getting too much fiber if you have symptoms like bloating, flatulence, abdominal distention, constipation, or diarrhea.
“There’s no perfect way to eat fiber other than slowly increasing, drinking more liquid, and getting a consistent amount [of fiber] daily,” Inge says. She recommends incorporating legumes, fruits, veggies, whole grains, and fortified foods into your diet to boost your fiber intake. She also suggests variety and spacing of fiber throughout meals and snacks, rather than consuming it all at once.

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Tori Martinet, MS, RD

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Tori Martinet is an Intuitive Eating dietitian, food writer, recipe developer, and food photographer based in Southern California. She received a master's degree in nutrition from ...

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Julie Cunningham, MPH, RDN, LDN, CDCES

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Julie Cunningham is a registered dietitian-nutritionist and a certified diabetes care and education specialist.

Cunningham received a bachelor's degree from Appalachian State Univer...

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Katie Tuttle is an editor and writer specializing in food, nutrition, and product testing. Her work has appeared in EatingWell, Food & Wine, The Spruce Eats, and Real Simple. She h...

EDITORIAL SOURCES
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Resources
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